How about this:
An evaluation on each single family home greater than 30 years, every 10 years, and
upon sale of home.
Less on multi family dwellings (20/5),
even less on commercial/industrial/institutional (15/3).
If the evaluator finds something amiss, an
inspector is called in and depending on what is wrong, the customer is either asked to take care of the problem, or the fuse is pulled.
